Question

why is sftp called secure protocol​

Answer 1

Your answer mate

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Secure fire transfer protocol (SFTP) also called SSH file Transfer protocol, is a network protocol for accessing transferring and managing files on remote system. SFTP was developed by the internet engineering task force (IETF) to securely transfer and manage files over a TCP/IP network.

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Answer 2

Answer:

As a file transfer protocol, SFTP is secure. SFTP protects the integrity of your files and data by using encryption and it authenticates the server as well as the end user in the transfer. Most FTP clients support SFTP connections.